Clive Cussler's real-life undersea adventures

When does Clive Cussler find time to write? In The Sea Hunters II, a collection of true stories about his searches for lost ships, aircraft and, in one case, cannons, the prolific adventure novelist seems always to be flying to this site or that to oversee yet another against-the-odds quest that he's underwritten with his book royalties. Often, the pursuit yields nothing except the...